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Nguyen HT, Falzarano D, Gerdts V, Liu Q. Construction and immunogenicity of SARS-CoV-2 virus-like particle expressed by recombinant baculovirus BacMam. Microbiol Spectr 2024; 12:e0095924. [PMID: 38916311 PMCID: PMC11302303 DOI: 10.1128/spectrum.00959-24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Accepted: 05/13/2024] [Indexed: 06/26/2024] Open
Abstract
The pandemic severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) continues to evolve to give rise to variants of concern that can escape vaccine-induced immunity. As such, more effective vaccines are urgently needed. In this study, we evaluated virus-like particle (VLP) as a vaccine platform for SARS-CoV-2. The spike, envelope, and membrane proteins of the SARS-CoV-2 Wuhan strain were expressed by a single recombinant baculovirus BacMam and assembled into VLPs in cell culture. The morphology and size of the SARS-CoV-2 VLP as shown by transmission electron microscopy were similar to the authentic SARS-CoV-2 virus particle. In a mouse trial, two intramuscular immunizations of the VLP BacMam with no adjuvant elicited spike-specific binding antibodies in both sera and bronchoalveolar lavage fluids. Importantly, BacMam VLP-vaccinated mouse sera showed neutralization activity against SARS-CoV-2 spike pseudotyped lentivirus. Our results indicated that the SARS-CoV-2 VLP BacMam stimulated spike-specific immune responses with neutralization activity. IMPORTANCE Although existing vaccines have significantly mitigated the impact of the COVID-19 pandemic, none of the vaccines can induce sterilizing immunity. The spike protein is the main component of all approved vaccines for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) due primarily to its ability to induce neutralizing antibodies. The conformation of the spike protein in the vaccine formulation should be critical for the efficacy of a vaccine. By way of closely resembling the authentic virions, virus-like particles (VLPs) should render the spike protein in its natural conformation. To this end, we utilized the baculovirus vector, BacMam, to express virus-like particles consisting of the spike, membrane, and envelope proteins of SARS-CoV-2. We demonstrated the immunogenicity of our VLP vaccine with neutralizing activity. Our data warrant further evaluation of the virus-like particles as a vaccine candidate in protecting against virus challenges.
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MESH Headings
- Animals
- SARS-CoV-2/immunology
- SARS-CoV-2/genetics
- Vaccines, Virus-Like Particle/immunology
- Vaccines, Virus-Like Particle/genetics
- Vaccines, Virus-Like Particle/administration & dosage
- Baculoviridae/genetics
- Baculoviridae/immunology
- Mice
- Antibodies, Viral/immunology
- Antibodies, Viral/blood
- Spike Glycoprotein, Coronavirus/immunology
- Spike Glycoprotein, Coronavirus/genetics
- COVID-19 Vaccines/immunology
- COVID-19 Vaccines/administration & dosage
- COVID-19/prevention & control
- COVID-19/immunology
- Antibodies, Neutralizing/immunology
- Antibodies, Neutralizing/blood
- Humans
- Mice, Inbred BALB C
- Female
- Immunogenicity, Vaccine
- Coronavirus Envelope Proteins/immunology
- Coronavirus Envelope Proteins/genetics
- Coronavirus M Proteins
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Affiliation(s)
- Hai Trong Nguyen
- Vaccine and Infectious Disease Organization (VIDO), University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Darryl Falzarano
- Vaccine and Infectious Disease Organization (VIDO), University of Saskatchewan, Saskatoon, Saskatchewan, Canada
- Department of Veterinary Microbiology, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Volker Gerdts
- Vaccine and Infectious Disease Organization (VIDO), University of Saskatchewan, Saskatoon, Saskatchewan, Canada
- Department of Veterinary Microbiology, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Qiang Liu
- Vaccine and Infectious Disease Organization (VIDO), University of Saskatchewan, Saskatoon, Saskatchewan, Canada
- Department of Veterinary Microbiology, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
- Vaccinology and Immunotherapeutics, School of Public Health, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
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2
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Çaldaş A, Börçek Kasurka C, Ertürk Ö. Effects of wasp ( Vespa crabro) nest extracts on virus replication of Autographa californica nuclear polyhedrosis virus on Spodoptera frugiperda cell culture. Cytotechnology 2024; 76:123-137. [PMID: 38304627 PMCID: PMC10828140 DOI: 10.1007/s10616-023-00603-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Accepted: 10/19/2023] [Indexed: 02/03/2024] Open
Abstract
The antiviral properties of the extracts of Vespa crabro nests collected from the Black Sea, Turkey have been investigated on Spodoptera frugiperda (Sf) cell cultures of Autographa californica multicapsid nuclear polyhedrosis virus (AcMNPV). The effect of nests on cell viability and cytotoxicity analysis and the antiviral assay was studied, and the cytopathic effects of the virus were detected. The nest's viral content was identified. The impact of nest extracts on the protein synthesis of the virus was investigated. Also interaction with pUC18 plasmid DNA was investigated, to analyse the protective effects of the Vespa crabro nest extract againist to hydroxyl radical-mediated DNA damage. 50 µg/ml concentration of ethanol, acetone, and petroleum ether extracts of the nests reduced the cytopathic effects of baculovirus on Sf cells. The extracts delayed infection above 25 µg/ml concentration. When the effects of nest extracts on virus titer were evaluated; the 50 µg/ml concentration of the acetone extract of the nest showed the highest effect (75%) reducing the virus titer. 25 µg/ml concentration of the ethanol extract of the nest showed the lowest effect (33.33%) with a reduction. The presence of polyhedrin protein was observed at 25 µg/ml concentrations of acetone and petroleum ether extracts. When the potential of the nest extracts to repair DNA damage, the nest extracts were found to have a concentration-dependent repair feature in different applications. As a result of bioactive component analysis, (Z) 9-Tricosane and (cis)-2-nonadecene (1.65%) were found to have the highest % areas. In other respects, 1H-Purine-6-amine, 2-dodecanol and hexadecanoic acid compaunds were Additionally, 1H-Purine-6-amine, 2-dodecanol and hexadecanoic acid compounds, which are associated with antiviral activity, also determined in the biocomponent analysis. Supplementary Information The online version contains supplementary material available at 10.1007/s10616-023-00603-0.
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Affiliation(s)
- Alev Çaldaş
- Department of Molecular Biology and Genetics, Faculty of Art&Science, Ordu University, 52200 Ordu, Turkey
| | - Ceren Börçek Kasurka
- Department of Molecular Biology and Genetics, Faculty of Art&Science, Ordu University, 52200 Ordu, Turkey
| | - Ömer Ertürk
- Department of Molecular Biology and Genetics, Faculty of Art&Science, Ordu University, 52200 Ordu, Turkey
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3
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Flock J, Xie Y, Lemaitre R, Lapouge K, Remans K. The Use of Baculovirus-Mediated Gene Expression in Mammalian Cells for Recombinant Protein Production. Methods Mol Biol 2024; 2810:29-53. [PMID: 38926271 DOI: 10.1007/978-1-0716-3878-1_3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/28/2024]
Abstract
Baculovirus-mediated gene expression in mammalian cells, BacMam, is a useful alternative to transient transfection for recombinant protein production in various types of mammalian cell lines. We decided to establish BacMam in our lab in order to streamline our workflows for gene expression in insect and mammalian cells, as it is straightforward to parallelize the baculovirus generation for both types of eukaryotic cells. This chapter provides a step-by-step description of the protocols we use for the generation of the recombinant BacMam viruses, the transduction of mammalian cell cultures, and optimization of the protein production conditions through small-scale expression and purification tests.
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Affiliation(s)
- Julia Flock
- Protein Expression and Purification Core Facility, European Molecular Biology Laboratory (EMBL), Heidelberg, Germany
| | - Yexin Xie
- Protein Expression and Purification Core Facility, European Molecular Biology Laboratory (EMBL), Heidelberg, Germany
| | - Régis Lemaitre
- Protein Biochemistry Facility, Max Planck Institute of Molecular Cell Biology and Genetics (MPI-CBG), Dresden, Germany
| | - Karine Lapouge
- Protein Expression and Purification Core Facility, European Molecular Biology Laboratory (EMBL), Heidelberg, Germany
| | - Kim Remans
- Protein Expression and Purification Core Facility, European Molecular Biology Laboratory (EMBL), Heidelberg, Germany.
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Schaly S, Islam P, Boyajian JL, Thareja R, Abosalha A, Arora K, Shum-Tim D, Prakash S. Controlled and customizable baculovirus NOS3 gene delivery using PVA-based hydrogel systems. PLoS One 2023; 18:e0290902. [PMID: 37733661 PMCID: PMC10513238 DOI: 10.1371/journal.pone.0290902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Accepted: 08/18/2023] [Indexed: 09/23/2023] Open
Abstract
Nitric oxide synthase 3 (NOS3) eluting polyvinyl alcohol-based hydrogels have a large potential in medical applications and device coatings. NOS3 promotes nitric oxide and nitrate production and can effectively be delivered using insect cell viruses, termed baculoviruses. Nitric oxide is known for regulating cell proliferation, promoting blood vessel vasodilation, and inhibiting bacterial growth. The polyvinyl alcohol (PVA)-based hydrogels investigated here sustained baculovirus elution from five to 25 days, depending on the hydrogel composition. The quantity of viable baculovirus loaded significantly declined with each freeze-thaw from one to four (15.3 ± 2.9% vs. 0.9 ± 0.5%, respectively). The addition of gelatin to the hydrogels protected baculovirus viability during the freeze-thaw cycles, resulting in a loading capacity of 94.6 ± 1.2% with sustained elution over 23 days. Adding chitosan, PEG-8000, and gelatin to the hydrogels altered the properties of the hydrogel, including swelling, blood coagulation, and antimicrobial effects, beneficial for different therapeutic applications. Passive absorption of the baculovirus into PVA hydrogels exhibited the highest baculovirus loading (96.4 ± 0.6%) with elution over 25 days. The baculovirus-eluting hydrogels were hemocompatible and non-cytotoxic, with no cell proliferation or viability reduction after incubation. This PVA delivery system provides a method for high loading and sustained release of baculoviruses, sustaining nitric oxide gene delivery. This proof of concept has clinical applications as a medical device or stent coating by delivering therapeutic genes, improving blood compatibility, preventing thrombosis, and preventing infection.
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Affiliation(s)
- Sabrina Schaly
- Biomedical Technology and Cell Therapy Research Laboratory, Department of Biomedical Engineering, Faculty of Medicine and Health Sciences, McGill University, Montreal, Quebec, Canada
| | - Paromita Islam
- Biomedical Technology and Cell Therapy Research Laboratory, Department of Biomedical Engineering, Faculty of Medicine and Health Sciences, McGill University, Montreal, Quebec, Canada
| | - Jacqueline L. Boyajian
- Biomedical Technology and Cell Therapy Research Laboratory, Department of Biomedical Engineering, Faculty of Medicine and Health Sciences, McGill University, Montreal, Quebec, Canada
| | - Rahul Thareja
- Biomedical Technology and Cell Therapy Research Laboratory, Department of Biomedical Engineering, Faculty of Medicine and Health Sciences, McGill University, Montreal, Quebec, Canada
| | - Ahmed Abosalha
- Biomedical Technology and Cell Therapy Research Laboratory, Department of Biomedical Engineering, Faculty of Medicine and Health Sciences, McGill University, Montreal, Quebec, Canada
- Pharmaceutical Technology Department, Faculty of Pharmacy, Tanta University, Tanta, Egypt
| | - Karan Arora
- Biomedical Technology and Cell Therapy Research Laboratory, Department of Biomedical Engineering, Faculty of Medicine and Health Sciences, McGill University, Montreal, Quebec, Canada
| | - Dominique Shum-Tim
- Division of Cardiac Surgery, Royal Victoria Hospital, McGill University Health Centre, McGill University, Faculty of Medicine, Montreal, Quebec, Canada
| | - Satya Prakash
- Biomedical Technology and Cell Therapy Research Laboratory, Department of Biomedical Engineering, Faculty of Medicine and Health Sciences, McGill University, Montreal, Quebec, Canada
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Pidre ML, Arrías PN, Amorós Morales LC, Romanowski V. The Magic Staff: A Comprehensive Overview of Baculovirus-Based Technologies Applied to Human and Animal Health. Viruses 2022; 15:80. [PMID: 36680120 PMCID: PMC9863858 DOI: 10.3390/v15010080] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 12/19/2022] [Accepted: 12/23/2022] [Indexed: 12/29/2022] Open
Abstract
Baculoviruses are enveloped, insect-specific viruses with large double-stranded DNA genomes. Among all the baculovirus species, Autographa californica multiple nucleopolyhedrovirus (AcMNPV) is the most studied. Due to its characteristics regarding biosafety, narrow host range and the availability of different platforms for modifying its genome, AcMNPV has become a powerful biotechnological tool. In this review, we will address the most widespread technological applications of baculoviruses. We will begin by summarizing their natural cycle both in larvae and in cell culture and how it can be exploited. Secondly, we will explore the different baculovirus-based protein expression systems (BEVS) and their multiple applications in the pharmaceutical and biotechnological industry. We will focus particularly on the production of vaccines, many of which are either currently commercialized or in advanced stages of development (e.g., Novavax, COVID-19 vaccine). In addition, recombinant baculoviruses can be used as efficient gene transduction and protein expression vectors in vertebrate cells (e.g., BacMam). Finally, we will extensively describe various gene therapy strategies based on baculoviruses applied to the treatment of different diseases. The main objective of this work is to provide an extensive up-to-date summary of the different biotechnological applications of baculoviruses, emphasizing the genetic modification strategies used in each field.
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Affiliation(s)
| | | | | | - Víctor Romanowski
- Instituto de Biotecnología y Biología Molecular (IBBM), Universidad Nacional de La Plata (UNLP) and Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), La Plata 1900, Argentina
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6
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Fujimori C, Umatani C, Chimura M, Ijiri S, Bando H, Hyodo S, Kanda S. In vitro and in vivo gene transfer in the cloudy catshark Scyliorhinus torazame. Dev Growth Differ 2022; 64:558-565. [PMID: 36376176 PMCID: PMC10099843 DOI: 10.1111/dgd.12824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 09/20/2022] [Accepted: 09/29/2022] [Indexed: 11/16/2022]
Abstract
Cartilaginous fishes have various unique physiological features such as a cartilaginous skeleton and a urea-based osmoregulation strategy for adaptation to their marine environment. Also, because they are a sister group of bony vertebrates, understanding their unique features is important from an evolutionary perspective. However, genetic engineering based on gene functions as well as cellular behavior has not been effectively utilized in cartilaginous fishes. This is partly because their reproductive strategy involves internal fertilization, which results in difficulty in microinjection into fertilized eggs at the early developmental stage. Here, to identify efficient gene transfer methods in cartilaginous fishes, we examined the effects of various methods both in vitro and in vivo using the cloudy catshark, a candidate model cartilaginous fish species. In all methods, green fluorescent protein (GFP) expression was used to evaluate exogenous gene transfer. First, we examined gene transfer into primary cultured cells from cloudy catshark embryos by lipofection, polyethylenimine (PEI) transfection, adenovirus infection, baculovirus infection, and electroporation. Among the methods tested, lipofection, electroporation, and baculovirus infection enabled the successful transfer of exogenous genes into primary cultured cells. We then attempted in vivo transfection into cloudy catshark embryos by electroporation and baculovirus infection. Although baculovirus-injected groups did not show GFP fluorescence, electroporation successfully introduced GFP into muscle cells. Furthermore, we succeeded in GFP transfer into adult tissues by electroporation. The in vitro and in vivo gene transfer methods that worked in this study may open ways for genetic manipulation including knockout experiments and cellular lineage analysis in cartilaginous fishes.
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Affiliation(s)
- Chika Fujimori
- Atmosphere and Ocean Research Institute, The University of Tokyo, Kashiwa, Chiba, Japan
| | - Chie Umatani
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Misaki Chimura
- Graduate School of Fisheries Sciences, Hokkaido University, Hakodate, Hokkaido, Japan
| | - Shigeho Ijiri
- Graduate School of Fisheries Sciences, Hokkaido University, Hakodate, Hokkaido, Japan
| | - Hisanori Bando
- Division of Applied Bioscience, Research Faculty of Agriculture, Hokkaido University, Sapporo, Hokkaido, Japan
| | - Susumu Hyodo
- Atmosphere and Ocean Research Institute, The University of Tokyo, Kashiwa, Chiba, Japan
| | - Shinji Kanda
- Atmosphere and Ocean Research Institute, The University of Tokyo, Kashiwa, Chiba, Japan
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7
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Schaly S, Islam P, Abosalha A, Boyajian JL, Shum-Tim D, Prakash S. Alginate-Chitosan Hydrogel Formulations Sustain Baculovirus Delivery and VEGFA Expression Which Promotes Angiogenesis for Wound Dressing Applications. Pharmaceuticals (Basel) 2022; 15:1382. [PMID: 36355553 PMCID: PMC9698055 DOI: 10.3390/ph15111382] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 11/02/2022] [Accepted: 11/04/2022] [Indexed: 09/23/2023] Open
Abstract
Hydrogel wound dressings are effective in their ability to provide a wound-healing environment but are limited by their ability to promote later stages of revascularization. Here, a biosafe recombinant baculovirus expressing VEGFA tagged with EGFP is encapsulated in chitosan-coated alginate hydrogels using ionic cross-linking. The VEGFA, delivered by the baculovirus, significantly improves cell migration and angiogenesis to assist with the wound-healing process and revascularization. Moreover, the hydrogels have an encapsulation efficiency of 99.9%, no cytotoxicity, antimicrobial properties, good blood compatibility, promote hemostasis, and enable sustained delivery of baculoviruses over eight days. These hydrogels sustain baculovirus delivery and may have clinical implications in wound dressings or future gene therapy applications.
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Affiliation(s)
- Sabrina Schaly
- Biomedical Technology and Cell Therapy Research Laboratory, Department of Biomedical Engineering, Faculty of Medicine, McGill University, 3775 University Street, Montreal, QC H3A 2B4, Canada
| | - Paromita Islam
- Biomedical Technology and Cell Therapy Research Laboratory, Department of Biomedical Engineering, Faculty of Medicine, McGill University, 3775 University Street, Montreal, QC H3A 2B4, Canada
| | - Ahmed Abosalha
- Biomedical Technology and Cell Therapy Research Laboratory, Department of Biomedical Engineering, Faculty of Medicine, McGill University, 3775 University Street, Montreal, QC H3A 2B4, Canada
- Pharmaceutical Technology Department, Faculty of Pharmacy, Tanta University, Tanta 31111, Egypt
| | - Jacqueline L. Boyajian
- Biomedical Technology and Cell Therapy Research Laboratory, Department of Biomedical Engineering, Faculty of Medicine, McGill University, 3775 University Street, Montreal, QC H3A 2B4, Canada
| | - Dominique Shum-Tim
- Division of Cardiac Surgery, Royal Victoria Hospital, McGill University Health Centre, Barrie, ON L4M 6M2, Canada
- Faculty of Medicine, McGill University, 3775 University Street, Montreal, QC H4A 3J1, Canada
| | - Satya Prakash
- Biomedical Technology and Cell Therapy Research Laboratory, Department of Biomedical Engineering, Faculty of Medicine, McGill University, 3775 University Street, Montreal, QC H3A 2B4, Canada
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Demirci S, Essawi K, Germino-Watnick P, Liu X, Hakami W, Tisdale JF. Advances in CRISPR Delivery Methods: Perspectives and Challenges. CRISPR J 2022; 5:660-676. [PMID: 36260301 PMCID: PMC9835311 DOI: 10.1089/crispr.2022.0051] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
With the advent of new genome editing technologies and the emphasis placed on their optimization, the genetic and phenotypic correction of a plethora of diseases sit on the horizon. Ideally, genome editing approaches would provide long-term solutions through permanent disease correction instead of simply treating patients symptomatically. Although various editing machinery options exist, the clustered regularly interspaced short palindromic repeats (CRISPR)-Cas (CRISPR-associated protein) editing technique has emerged as the most popular due to its high editing efficiency, simplicity, and affordability. However, while CRISPR technology is gradually being perfected, optimization is futile without accessible, effective, and safe delivery to the desired cell or tissue. Therefore, it is important that scientists simultaneously focus on inventing and improving delivery modalities for editing machinery as well. In this review, we will discuss the critical details of viral and nonviral delivery systems, including payload, immunogenicity, efficacy in delivery, clinical application, and future directions.
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Affiliation(s)
- Selami Demirci
- Cellular and Molecular Therapeutics Branch, National Heart Lung and Blood Institutes (NHLBI), National Institutes of Health (NIH), Bethesda, Maryland, USA; and College of Applied Medical Sciences, Jazan University, Jazan, Saudi Arabia.,Address correspondence to: Selami Demirci, Cellular and Molecular Therapeutics Branch, National Heart Lung and Blood Institutes (NHLBI), National Institutes of Health (NIH), Bethesda, MD 20814, USA,
| | - Khaled Essawi
- Cellular and Molecular Therapeutics Branch, National Heart Lung and Blood Institutes (NHLBI), National Institutes of Health (NIH), Bethesda, Maryland, USA; and College of Applied Medical Sciences, Jazan University, Jazan, Saudi Arabia.,Department of Medical Laboratory Science, College of Applied Medical Sciences, Jazan University, Jazan, Saudi Arabia
| | - Paula Germino-Watnick
- Cellular and Molecular Therapeutics Branch, National Heart Lung and Blood Institutes (NHLBI), National Institutes of Health (NIH), Bethesda, Maryland, USA; and College of Applied Medical Sciences, Jazan University, Jazan, Saudi Arabia
| | - Xiong Liu
- Cellular and Molecular Therapeutics Branch, National Heart Lung and Blood Institutes (NHLBI), National Institutes of Health (NIH), Bethesda, Maryland, USA; and College of Applied Medical Sciences, Jazan University, Jazan, Saudi Arabia
| | - Waleed Hakami
- Department of Medical Laboratory Science, College of Applied Medical Sciences, Jazan University, Jazan, Saudi Arabia
| | - John F. Tisdale
- Cellular and Molecular Therapeutics Branch, National Heart Lung and Blood Institutes (NHLBI), National Institutes of Health (NIH), Bethesda, Maryland, USA; and College of Applied Medical Sciences, Jazan University, Jazan, Saudi Arabia.,Address correspondence to: John F. Tisdale, Cellular and Molecular Therapeutics Branch, National Heart Lung and Blood Institutes (NHLBI), National Institutes of Health (NIH), Bethesda, MD 20814, USA,
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Oshima A, Nakanishi K, Kasai N, Nakashima H, Tsumoto K, Sumitomo K. Mechanism of Budded Virus Envelope Fusion into a Planar Bilayer Lipid Membrane on a SiO 2 Substrate. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:5464-5471. [PMID: 35436122 DOI: 10.1021/acs.langmuir.1c03456] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Artificial planar bilayer lipid membranes (BLMs) are simple models of cellular systems under physically and chemically controlled conditions, and they have been used to investigate membrane protein activity. Baculovirus-budded virus (BV) systems can express recombinant membrane proteins. In this study, aiming for membrane protein reconstitution, we examined the fusion of BVs containing recombinant membrane proteins into artificial planar BLMs on a Si microwell substrate. BV fusion with the BLMs depended on the pH of the solution, and it was enhanced at lower pH. Based on fluorescence recovery after photobleaching (FRAP) measurement, the fusion state of BVs was evaluated, and full fusion at low pH was confirmed. The fluorescent labeling the membrane proteins was also observed in the freestanding part of the BLMs as well as in the supported part. These results demonstrate the effectiveness of BLMs as a platform to examine detailed fusion dynamics of BVs. Furthermore, this study revealed that the fusion of BVs is a promising method for reconstituting membrane proteins to artificial freestanding BLMs for the development of biodevices with which we can examine membrane protein activity.
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Affiliation(s)
- Azusa Oshima
- NTT Basic Research Laboratories and Bio-Medical Informatics Research Center, NTT Corporation, 3-1 Morinosato Wakamiya, Atsugi, Kanagawa 243-0198, Japan
- NTT Basic Research Laboratories, NTT Corporation, 3-1 Morinosato Wakamiya, Atsugi, Kanagawa 243-0198, Japan
| | - Kohei Nakanishi
- Division of Chemistry for Materials, Graduate School of Engineering, Mie University, 1577 Kurimamachiya-cho, Tsu, Mie 514-8507, Japan
| | - Nahoko Kasai
- NTT Basic Research Laboratories, NTT Corporation, 3-1 Morinosato Wakamiya, Atsugi, Kanagawa 243-0198, Japan
| | - Hiroshi Nakashima
- NTT Basic Research Laboratories and Bio-Medical Informatics Research Center, NTT Corporation, 3-1 Morinosato Wakamiya, Atsugi, Kanagawa 243-0198, Japan
- NTT Basic Research Laboratories, NTT Corporation, 3-1 Morinosato Wakamiya, Atsugi, Kanagawa 243-0198, Japan
| | - Kanta Tsumoto
- Division of Chemistry for Materials, Graduate School of Engineering, Mie University, 1577 Kurimamachiya-cho, Tsu, Mie 514-8507, Japan
| | - Koji Sumitomo
- University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2280, Japan
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Mahmoud AB, Ajina R, Aref S, Darwish M, Alsayb M, Taher M, AlSharif SA, Hashem AM, Alkayyal AA. Advances in immunotherapy for glioblastoma multiforme. Front Immunol 2022; 13:944452. [PMID: 36311781 PMCID: PMC9597698 DOI: 10.3389/fimmu.2022.944452] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Accepted: 09/23/2022] [Indexed: 02/05/2023] Open
Abstract
Glioblastoma multiforme (GBM) is the most common and aggressive malignant brain tumor of the central nervous system and has a very poor prognosis. The current standard of care for patients with GBM involves surgical resection, radiotherapy, and chemotherapy. Unfortunately, conventional therapies have not resulted in significant improvements in the survival outcomes of patients with GBM; therefore, the overall mortality rate remains high. Immunotherapy is a type of cancer treatment that helps the immune system to fight cancer and has shown success in different types of aggressive cancers. Recently, healthcare providers have been actively investigating various immunotherapeutic approaches to treat GBM. We reviewed the most promising immunotherapy candidates for glioblastoma that have achieved encouraging results in clinical trials, focusing on immune checkpoint inhibitors, oncolytic viruses, nonreplicating viral vectors, and chimeric antigen receptor (CAR) immunotherapies.
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Affiliation(s)
- Ahmad Bakur Mahmoud
- College of Applied Medical Sciences, Taibah University, Almadinah Almunwarah, Saudi Arabia
- Strategic Research and Innovation Laboratories, Taibah University, Almadinah Almunwarah, Saudi Arabia
- King Abdullah International Medical Research Centre, King Saud University for Health Sciences, Ministry of National Guard Health Affairs, Riyadh, Saudi Arabia
- *Correspondence: Ahmad Bakur Mahmoud, ; Almohanad A. Alkayyal,
| | - Reham Ajina
- King Abdullah International Medical Research Centre, King Saud University for Health Sciences, Ministry of National Guard Health Affairs, Riyadh, Saudi Arabia
| | - Sarah Aref
- King Abdullah International Medical Research Centre, King Saud University for Health Sciences, Ministry of National Guard Health Affairs, Riyadh, Saudi Arabia
| | - Manar Darwish
- Strategic Research and Innovation Laboratories, Taibah University, Almadinah Almunwarah, Saudi Arabia
| | - May Alsayb
- College of Applied Medical Sciences, Taibah University, Almadinah Almunwarah, Saudi Arabia
| | - Mustafa Taher
- College of Applied Medical Sciences, Taibah University, Almadinah Almunwarah, Saudi Arabia
- Strategic Research and Innovation Laboratories, Taibah University, Almadinah Almunwarah, Saudi Arabia
| | - Shaker A. AlSharif
- King Fahad Hospital, Ministry of Health, Almadinah Almunwarah, Saudi Arabia
| | - Anwar M. Hashem
- Vaccines and Immunotherapy Unit, King Fahd Medical Research Center; King Abdulaziz University, Jeddah, Saudi Arabia
- Department of Medical Microbiology and Parasitology, Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Almohanad A. Alkayyal
- Department of Medical Laboratory Technology, University of Tabuk, Tabuk, Saudi Arabia
- Immunology Research Program, King Abdullah International Medical Research Center, Riyadh, Saudi Arabia
- *Correspondence: Ahmad Bakur Mahmoud, ; Almohanad A. Alkayyal,
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Sa-nguanmoo N, Namdee K, Khongkow M, Ruktanonchai U, Zhao Y, Liang XJ. Review: Development of SARS-CoV-2 immuno-enhanced COVID-19 vaccines with nano-platform. NANO RESEARCH 2022; 15:2196-2225. [PMID: 34659650 PMCID: PMC8501370 DOI: 10.1007/s12274-021-3832-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 08/19/2021] [Accepted: 08/19/2021] [Indexed: 05/04/2023]
Abstract
Vaccination is the most effective way to prevent coronavirus disease 2019 (COVID-19). Vaccine development approaches consist of viral vector vaccines, DNA vaccine, RNA vaccine, live attenuated virus, and recombinant proteins, which elicit a specific immune response. The use of nanoparticles displaying antigen is one of the alternative approaches to conventional vaccines. This is due to the fact that nano-based vaccines are stable, able to target, form images, and offer an opportunity to enhance the immune responses. The diameters of ultrafine nanoparticles are in the range of 1-100 nm. The application of nanotechnology on vaccine design provides precise fabrication of nanomaterials with desirable properties and ability to eliminate undesirable features. To be successful, nanomaterials must be uptaken into the cell, especially into the target and able to modulate cellular functions at the subcellular levels. The advantages of nano-based vaccines are the ability to protect a cargo such as RNA, DNA, protein, or synthesis substance and have enhanced stability in a broad range of pH, ambient temperatures, and humidity for long-term storage. Moreover, nano-based vaccines can be engineered to overcome biological barriers such as nonspecific distribution in order to elicit functions in antigen presenting cells. In this review, we will summarize on the developing COVID-19 vaccine strategies and how the nanotechnology can enhance antigen presentation and strong immunogenicity using advanced technology in nanocarrier to deliver antigens. The discussion about their safe, effective, and affordable vaccines to immunize against COVID-19 will be highlighted.
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Affiliation(s)
- Nawamin Sa-nguanmoo
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology of China, Beijing, 100190 China
- University of Chinese Academy of Sciences, Beijing, 100049 China
| | - Katawut Namdee
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency, Pathum Thani, 12120 Thailand
| | - Mattaka Khongkow
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency, Pathum Thani, 12120 Thailand
| | - Uracha Ruktanonchai
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency, Pathum Thani, 12120 Thailand
| | - YongXiang Zhao
- National Center for International Research of Biotargeting Theranostics, Guangxi Key Laboratory of Biotargeting Theranostics, Collaborative Innovation Center for Targeting Tumour Theranostics and Therapy, Guangxi Medical University, Nanning, 530021 China
| | - Xing-Jie Liang
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology of China, Beijing, 100190 China
- University of Chinese Academy of Sciences, Beijing, 100049 China
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12
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SynBac: Enhanced Baculovirus Genomes by Iterative Recombineering. Methods Mol Biol 2021. [PMID: 33950388 DOI: 10.1007/978-1-0716-1406-8_7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
Abstract
Baculovirus expression vector systems (BEVS) are widely used to produce heterologous proteins for a wide range of applications. Developed more than 30 years ago, BEVS have been constantly modified to improve product quality and ease-of-use. Plasmid reagents were tailored and engineered to facilitate introduction of heterologous genes into baculoviral genomes. At the same time, detrimental modalities such as genes encoding proteases or apoptotic factors were removed to improve protein yield. Advances in DNA synthesis and manipulation now enable the engineering of part or whole synthetic baculovirus genomes, opening up new avenues to redesign and tailor the system to specific applications. Here, we describe a simple protocol for designing and constructing baculovirus genomes comprising segments of synthetic DNA through the use of iterative Red/ET homologous recombination reactions.
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13
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Lavogina D, Laasfeld T, Tahk MJ, Kukk O, Allikalt A, Kopanchuk S, Rinken A. cAMP Biosensor Assay Using BacMam Expression System: Studying the Downstream Signaling of LH/hCG Receptor Activation. Methods Mol Biol 2021; 2268:179-192. [PMID: 34085269 DOI: 10.1007/978-1-0716-1221-7_12] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Cyclic adenosine monophosphate (cAMP) serves as a second messenger for numerous G-protein-coupled receptors. Changes in cellular cAMP levels reflect the biological activity of various GPCR-specific agents, including protein hormones. cAMP biosensors based on detection of Förster-type resonance energy transfer (FRET) offer unique advantages including the ratiometric nature of measurement, adjustable affinity toward detected molecule, capability of monitoring kinetics of cAMP release, and compatibility with the multi-well format and fluorescence plate reader platforms. In this chapter, we introduce the optimized version of the previously reported method to achieve sufficient and reproducible level of cAMP biosensor protein expression with the means of BacMam transduction system. As a practical challenge, we address the applicability of the designed assay for screening of biological activity of human hormones, including human chorionic gonadotropin (hCG) bearing different posttranslational modifications.
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Affiliation(s)
- Darja Lavogina
- Institute of Chemistry, University of Tartu, Tartu, Estonia
- University of Tartu, Institute of Clinical Medicine, Clinic of Hematology and Oncology, Tartu, Estonia
- Competence Centre on Reproductive Medicine & Biology, Tartu, Estonia
| | - Tõnis Laasfeld
- Institute of Chemistry, University of Tartu, Tartu, Estonia
| | | | - Olga Kukk
- Institute of Chemistry, University of Tartu, Tartu, Estonia
- Competence Centre on Reproductive Medicine & Biology, Tartu, Estonia
| | - Anni Allikalt
- Institute of Chemistry, University of Tartu, Tartu, Estonia
| | | | - Ago Rinken
- Institute of Chemistry, University of Tartu, Tartu, Estonia.
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14
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Schaly S, Ghebretatios M, Prakash S. Baculoviruses in Gene Therapy and Personalized Medicine. Biologics 2021; 15:115-132. [PMID: 33953541 PMCID: PMC8088983 DOI: 10.2147/btt.s292692] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Accepted: 02/22/2021] [Indexed: 12/18/2022]
Abstract
This review will outline the role of baculoviruses in gene therapy and future potential in personalized medicine. Baculoviruses are a safe, non-toxic, non-integrative vector with a large cloning capacity. Baculoviruses are also a highly adaptable, low-cost vector with a broad tissue and host tropism due to their ability to infect both quiescent and proliferating cells. Moreover, they only replicate in insect cells, not mammalian cells, improving their biosafety. The beneficial properties of baculoviruses make it an attractive option for gene delivery. The use of baculoviruses in gene therapy has advanced significantly, contributing to vaccine production, anti-cancer therapies and regenerative medicine. Currently, baculoviruses are primarily used for recombinant protein production and vaccines. This review will also discuss methods to optimize baculoviruses protein production and mammalian cell entry, limitations and potential for gene therapy and personalized medicine. Limitations such as transient gene expression, complement activation and virus fragility are discussed in details as they can be overcome through further genetic modifications and other methods. This review concludes that baculoviruses are an excllent candidate for gene therapy, personalized medicine and other biotherapeutic applications.
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Affiliation(s)
- Sabrina Schaly
- Biomedical Technology and Cell Therapy Research Laboratory, Department of Biomedical Engineering, Faculty of Medicine, McGill University, Montreal, Quebec, H3A 2B4, Canada
| | - Merry Ghebretatios
- Biomedical Technology and Cell Therapy Research Laboratory, Department of Biomedical Engineering, Faculty of Medicine, McGill University, Montreal, Quebec, H3A 2B4, Canada
| | - Satya Prakash
- Biomedical Technology and Cell Therapy Research Laboratory, Department of Biomedical Engineering, Faculty of Medicine, McGill University, Montreal, Quebec, H3A 2B4, Canada
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15
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Cho H, Jang Y, Park KH, Choi H, Nowakowska A, Lee HJ, Kim M, Kang MH, Kim JH, Shin HY, Oh YK, Kim YB. Human endogenous retrovirus-enveloped baculoviral DNA vaccines against MERS-CoV and SARS-CoV2. NPJ Vaccines 2021; 6:37. [PMID: 33741992 PMCID: PMC7979866 DOI: 10.1038/s41541-021-00303-w] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Accepted: 02/24/2021] [Indexed: 12/18/2022] Open
Abstract
Here we report a recombinant baculoviral vector-based DNA vaccine system against Middle East respiratory syndrome coronavirus (MERS-CoV) and the severe acute respiratory syndrome coronavirus-2 (SARS-CoV2). A non-replicating recombinant baculovirus expressing the human endogenous retrovirus envelope gene (AcHERV) was constructed as a DNA vaccine vector for gene delivery into human cells. For MERS-CoV vaccine construction, DNA encoding MERS-CoV S-full, S1 subunit, or receptor-binding domain (RBD) was inserted into the genome of AcHERV. For COVID19 vaccine construction, DNA encoding SARS-CoV2 S-full or S1 or a MERS-CoV NTD domain-fused SARS-CoV2 RBD was inserted into the genome of AcHERV. AcHERV-DNA vaccines induce high humoral and cell-mediated immunity in animal models. In challenge tests, twice immunized AcHERV-MERS-S1 and AcHERV-COVID19-S showed complete protection against MERS-CoV and SARS-CoV2, respectively. Unlike AcHERV-MERS vaccines, AcHERV-COVID19-S provided the greatest protection against SARS-CoV2 challenge. These results support the feasibility of AcHERV-MERS or AcHERV-COVID19 vaccines in preventing pandemic spreads of viral infections.
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Affiliation(s)
| | - Yuyeon Jang
- Department of Bio-industrial Technologies, Konkuk University, Seoul, Republic of Korea.,Department of Biomedical Science and Engineering, Konkuk University, Seoul, Republic of Korea
| | - Ki-Hoon Park
- Department of Bio-industrial Technologies, Konkuk University, Seoul, Republic of Korea.,Department of Biomedical Science and Engineering, Konkuk University, Seoul, Republic of Korea
| | - Hanul Choi
- Department of Bio-industrial Technologies, Konkuk University, Seoul, Republic of Korea.,Department of Biomedical Science and Engineering, Konkuk University, Seoul, Republic of Korea
| | - Aleksandra Nowakowska
- Department of Biomedical Science and Engineering, Konkuk University, Seoul, Republic of Korea
| | - Hee-Jung Lee
- Department of Biomedical Science and Engineering, Konkuk University, Seoul, Republic of Korea
| | - Minjee Kim
- Department of Biomedical Science and Engineering, Konkuk University, Seoul, Republic of Korea
| | - Min-Hee Kang
- Department of Stem Cell and Regenerative Biotechnology, Konkuk University, Seoul, Republic of Korea
| | - Jin-Hoi Kim
- Department of Stem Cell and Regenerative Biotechnology, Konkuk University, Seoul, Republic of Korea
| | - Ha Youn Shin
- Department of Biomedical Science and Engineering, Konkuk University, Seoul, Republic of Korea
| | - Yu-Kyoung Oh
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul, Republic of Korea
| | - Young Bong Kim
- KR BioTech, Seoul, Republic of Korea. .,Department of Bio-industrial Technologies, Konkuk University, Seoul, Republic of Korea. .,Department of Biomedical Science and Engineering, Konkuk University, Seoul, Republic of Korea.
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16
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Research Progress and Challenges in Vaccine Development against Classical Swine Fever Virus. Viruses 2021; 13:v13030445. [PMID: 33801868 PMCID: PMC7998128 DOI: 10.3390/v13030445] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 03/01/2021] [Accepted: 03/04/2021] [Indexed: 01/06/2023] Open
Abstract
Classical swine fever (CSF), caused by CSF virus (CSFV), is one of the most devastating viral epizootic diseases of swine in many countries. To control the disease, highly efficacious and safe live attenuated vaccines have been used for decades. However, the main drawback of these conventional vaccines is the lack of differentiability of infected from vaccinated animals (DIVA concept). Advances in biotechnology and our detailed knowledge of multiple basic science disciplines have facilitated the development of effective and safer DIVA vaccines to control CSF. To date, two types of DIVA vaccines have been developed commercially, including the subunit vaccines based on CSFV envelope glycoprotein E2 and chimeric pestivirus vaccines based on infectious cDNA clones of CSFV or bovine viral diarrhea virus (BVDV). Although inoculation of these vaccines successfully induces solid immunity against CSFV, none of them could ideally meet all demands regarding to safety, efficacy, DIVA potential, and marketability. Due to the limitations of the available choices, researchers are still striving towards the development of more advanced DIVA vaccines against CSF. This review summarizes the present status of candidate CSFV vaccines that have been developed. The strategies and approaches revealed here may also be helpful for the development of new-generation vaccines against other diseases.
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17
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Mahajan P, Ellis K, Mukhopadhyay S, Fernandez-Cid A, Chi G, Man H, Dürr KL, Burgess-Brown NA. Expression Screening of Human Integral Membrane Proteins Using BacMam. Methods Mol Biol 2021; 2199:95-115. [PMID: 33125646 DOI: 10.1007/978-1-0716-0892-0_6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
This chapter describes the step-by-step methods employed by the Structural Genomics Consortium (SGC) for screening and producing proteins in the BacMam system. This eukaryotic expression system was selected and a screening process established in 2016 to enable production of highly challenging human integral membrane proteins (IMPs), which are a significant component of our target list. Here, we discuss our recently developed platform for identifying expression and monodispersity of IMPs from 3 mL of HEK293 cells.
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Affiliation(s)
| | | | | | | | - Gamma Chi
- Structural Genomics Consortium, University of Oxford, Oxford, UK
| | - Henry Man
- Structural Genomics Consortium, University of Oxford, Oxford, UK
| | - Katharina L Dürr
- Structural Genomics Consortium, University of Oxford, Oxford, UK
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18
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Narayan C, Kwon J, Kim C, Kim SJ, Jang SK. Virus-based SELEX (viro-SELEX) allows development of aptamers targeting knotty proteins. Analyst 2020; 145:1473-1482. [PMID: 31868873 DOI: 10.1039/c9an01943j] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
It has been 100 years since the worst flu (Spanish flu) mankind has ever experienced. Rapid, accurate diagnosis and subtyping of flu are still an urgent unmet medical need. By using surrogate virus-based SELEX (viro-SELEX), we report here multiple advances incorporated into the field of flu diagnostics: (i) aptamers that can bind to the native virus well even though they cannot bind strongly to a recombinant protein (hemagglutinin); (ii) a couple of aptamers that can target a broad range of strains belonging to the H1N1 subtype and detect only the H1N1 subtype and nothing else; (iii) a highly sensitive lateral flow assay system (limit of detection is 0.08 HAU) using fluorescence-tagged aptamers. The viro-SELEX method of aptamer selection in conjunction with a fluorescent tag on aptamers is a very useful approach to develop highly sensitive, specific, portable, rapid, and quantitative point-of-care testing diagnostic tools for the future.
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Affiliation(s)
- Chandan Narayan
- Molecular virology Laboratory, Department of Life Sciences, Postech Biotech Center, Pohang University of Science and Technology, Cheongam-ro 77, Nam-gu, Pohang-si, Gyeongsangbuk-do 37673, Republic of Korea.
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19
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Amalfi S, Molina GN, Bevacqua RJ, López MG, Taboga O, Alfonso V. Baculovirus Transduction in Mammalian Cells Is Affected by the Production of Type I and III Interferons, Which Is Mediated Mainly by the cGAS-STING Pathway. J Virol 2020; 94:e01555-20. [PMID: 32796076 PMCID: PMC7565641 DOI: 10.1128/jvi.01555-20] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Accepted: 08/05/2020] [Indexed: 12/13/2022] Open
Abstract
The baculovirus Autographa californica multiple nucleopolyhedrovirus is an insect virus with a circular double-stranded DNA genome, which, among other multiple biotechnological applications, is used as an expression vector for gene delivery in mammalian cells. Nevertheless, the nonspecific immune response triggered by viral vectors often suppresses transgene expression. To understand the mechanisms involved in that response, in the present study, we studied the cyclic GMP-AMP synthase-stimulator of interferon genes (cGAS-STING) pathway by using two approaches: the genetic edition through CRISPR/Cas9 technology of genes encoding STING or cGAS in NIH/3T3 murine fibroblasts and the infection of HEK293 and HEK293 T human epithelial cells, deficient in cGAS and in cGAS and STING expression, respectively. Overall, our results suggest the existence of two different pathways involved in the establishment of the antiviral response, both dependent on STING expression. Particularly, the cGAS-STING pathway resulted in the more relevant production of beta interferon (IFN-β) and IFN-λ1 in response to baculovirus infection. In human epithelial cells, IFN-λ1 production was also induced in a cGAS-independent and DNA-protein kinase (DNA-PK)-dependent manner. Finally, we demonstrated that these cellular responses toward baculovirus infection affect the efficiency of transduction of baculovirus vectors.IMPORTANCE Baculoviruses are nonpathogenic viruses that infect mammals, which, among other applications, are used as vehicles for gene delivery. Here, we demonstrated that the cytosolic DNA sensor cGAS recognizes baculoviral DNA and that the cGAS-STING axis is primarily responsible for the attenuation of transduction in human and mouse cell lines through type I and type III IFNs. Furthermore, we identified DNA-dependent protein kinase (DNA-PK) as a cGAS-independent and alternative DNA cytosolic sensor that contributes less to the antiviral state in baculovirus infection in human epithelial cells than cGAS. Knowledge of the pathways involved in the response of mammalian cells to baculovirus infection will improve the use of this vector as a tool for gene therapy.
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Affiliation(s)
- Sabrina Amalfi
- Instituto de Agrobiotecnología y Biología Molecular (IABIMO), Instituto Nacional de Tecnología Agropecuaria (INTA), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Hurlingham, Argentina
| | - Guido Nicolás Molina
- Instituto de Agrobiotecnología y Biología Molecular (IABIMO), Instituto Nacional de Tecnología Agropecuaria (INTA), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Hurlingham, Argentina
| | - Romina Jimena Bevacqua
- Laboratorio de Biotecnología Animal, Facultad de Agronomía, Universidad de Buenos Aires/INPA-CONICET, Buenos Aires, Argentina
- Seung Kim Lab, Department of Developmental Biology, Stanford University School of Medicine, Stanford, California, USA
| | - María Gabriela López
- Instituto de Agrobiotecnología y Biología Molecular (IABIMO), Instituto Nacional de Tecnología Agropecuaria (INTA), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Hurlingham, Argentina
| | - Oscar Taboga
- Instituto de Agrobiotecnología y Biología Molecular (IABIMO), Instituto Nacional de Tecnología Agropecuaria (INTA), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Hurlingham, Argentina
| | - Victoria Alfonso
- Instituto de Agrobiotecnología y Biología Molecular (IABIMO), Instituto Nacional de Tecnología Agropecuaria (INTA), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Hurlingham, Argentina
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20
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Bioreactor-Based Antigen Production Process Using the Baculovirus Expression Vector System. Methods Mol Biol 2020. [PMID: 32959243 DOI: 10.1007/978-1-0716-0795-4_8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
Abstract
Several vaccines are already produced using the baculovirus expression vector system (BEVS). This chapter describes methods for generating recombinant baculoviral DNA (also called bacmid) for cultivating Spodoptera frugiperda Sf-9 cells and producing a baculovirus stock from the recombinant bacmid and for producing a protein-based vaccine with the BEVS in a stirred tank reactor.
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21
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Production of Baculovirus and Stem Cells for Baculovirus-Mediated Gene Transfer into Human Mesenchymal Stem Cells. Methods Mol Biol 2020; 2183:367-390. [PMID: 32959254 DOI: 10.1007/978-1-0716-0795-4_19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
The discovery of the genome-editing tool CRISPR-Cas9 is revolutionizing the world of gene therapy and will extend the gene therapy product pipeline. While applying gene therapy products, the main difficulty is an efficient and effective transfer of the nucleic acids carrying the relevant information to their target destination, the nucleus of the cells. Baculoviruses have shown to be very suitable transport vehicles for this task due to, inter alia, their ability to transduce mammalian/human cells without being pathogenic. This property allows the usage of baculovirus-transduced cells as cell therapy products, thus, combining the advantages of gene and cell therapy. To make such pharmaceuticals available for patients, a successful production and purification is necessary. In this chapter, we describe the generation of a pseudotyped baculovirus vector, followed by downstream processing using depth and tangential-flow filtration. This vector is used subsequently to transduce human mesenchymal stem cells. The production of the cells and the subsequent transduction process are illustrated.
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22
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Xu X, Holmes TC, Luo MH, Beier KT, Horwitz GD, Zhao F, Zeng W, Hui M, Semler BL, Sandri-Goldin RM. Viral Vectors for Neural Circuit Mapping and Recent Advances in Trans-synaptic Anterograde Tracers. Neuron 2020; 107:1029-1047. [PMID: 32755550 DOI: 10.1016/j.neuron.2020.07.010] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Revised: 06/23/2020] [Accepted: 07/12/2020] [Indexed: 12/17/2022]
Abstract
Viral tracers are important tools for neuroanatomical mapping and genetic payload delivery. Genetically modified viruses allow for cell-type-specific targeting and overcome many limitations of non-viral tracers. Here, we summarize the viruses that have been developed for neural circuit mapping, and we provide a primer on currently applied anterograde and retrograde viral tracers with practical guidance on experimental uses. We also discuss and highlight key technical and conceptual considerations for developing new safer and more effective anterograde trans-synaptic viral vectors for neural circuit analysis in multiple species.
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Affiliation(s)
- Xiangmin Xu
- Department of Anatomy and Neurobiology, School of Medicine, University of California, Irvine, Irvine, CA 92697-1275, USA; Department of Microbiology and Molecular Genetics, School of Medicine, University of California, Irvine, Irvine, CA 92697-4025, USA; Department of Biomedical Engineering, University of California, Irvine, Irvine, CA 92697-2715, USA; The Center for Neural Circuit Mapping, University of California, Irvine, Irvine, CA 92697, USA.
| | - Todd C Holmes
- Department of Physiology and Biophysics, University of California, Irvine, Irvine, CA 92697-4560, USA; The Center for Neural Circuit Mapping, University of California, Irvine, Irvine, CA 92697, USA
| | - Min-Hua Luo
- State Key Laboratory of Virology, Wuhan Institute of Virology, CAS Center for Excellence in Brain Science, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan 430071, China; The Center for Neural Circuit Mapping, University of California, Irvine, Irvine, CA 92697, USA
| | - Kevin T Beier
- Department of Physiology and Biophysics, University of California, Irvine, Irvine, CA 92697-4560, USA; The Center for Neural Circuit Mapping, University of California, Irvine, Irvine, CA 92697, USA
| | - Gregory D Horwitz
- The Washington National Primate Research Center, University of Washington, Seattle, WA 98195, USA; Department of Physiology & Biophysics, University of Washington, Seattle, WA 98195, USA; The Center for Neural Circuit Mapping, University of California, Irvine, Irvine, CA 92697, USA
| | - Fei Zhao
- School of Basic Medical Sciences, Capital Medical University, Beijing 102206, China; Chinese Institute for Brain Research (CIBR), Beijing 102206, China
| | - Wenbo Zeng
- State Key Laboratory of Virology, Wuhan Institute of Virology, CAS Center for Excellence in Brain Science, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan 430071, China
| | - May Hui
- Department of Physiology and Biophysics, University of California, Irvine, Irvine, CA 92697-4560, USA
| | - Bert L Semler
- Department of Microbiology and Molecular Genetics, School of Medicine, University of California, Irvine, Irvine, CA 92697-4025, USA; The Center for Neural Circuit Mapping, University of California, Irvine, Irvine, CA 92697, USA
| | - Rozanne M Sandri-Goldin
- Department of Microbiology and Molecular Genetics, School of Medicine, University of California, Irvine, Irvine, CA 92697-4025, USA; The Center for Neural Circuit Mapping, University of California, Irvine, Irvine, CA 92697, USA
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Abstract
Baculoviruses are arthropod-specific, enveloped viruses with circular, supercoiled double-stranded deoxyribonucleic acid genomes. While many viruses are studied to seek solutions for their adverse impact on human, veterinary, and plant health, the study of baculoviruses was stimulated initially by their potential utility to control insect pests. Later, the utility of baculovirus as gene expression vectors was evidenced leading to numerous applications. Several strategies are employed to obtain recombinant viruses that express large quantities of heterologous proteins. A major step forward was the development of bacmid technology (the construction of bacterial artificial chromosomes containing the genome of the baculovirus) which allows the manipulation of the baculovirus genome in bacteria. With this technology, foreign genes can be introduced into the bacmid by homologous and site-directed recombination or by transposition. Baculoviruses have been used to explore fundamental questions in molecular biology such as the nature of programmed cell-death. Moreover, the ability of baculoviruses to transduce mammalian cells led to the consideration of their use as gene-therapy and vaccine vectors. Strategies for genetic engineering of baculoviruses have been developed to meet the requirements of new application areas. Display of foreign proteins on the surface of virions or in nucleocapsid structures, the assembly of expressed proteins to form virus-like particles or protein complexes have been explored and validated as vaccines. The aim of this chapter is to update the areas of application of the baculoviruses in protein expression, alternative vaccine designs and gene therapy of infectious diseases and genetic disorders. Finally, we review the baculovirus-derived products on the market and in the pipeline for biomedical and veterinary use.
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Nakanishi K, Tomita M, Tsumoto K. Membrane fusion and infection abilities of baculovirus virions are preserved during freezing and thawing in the presence of trehalose. Biosci Biotechnol Biochem 2019; 84:686-694. [PMID: 31852366 DOI: 10.1080/09168451.2019.1704396] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Budded viruses (BVs) of baculovirus such as Autographa californica nucleopolyhedrovirus (AcNPV) have recently been studied as biological nanomaterials, and methods for their longer-term storage without deterioration would be desirable. The cryopreservation of virions with a naturally occurring saccharide like trehalose as a cryoprotectant is known to be useful for maintaining the viral structure and function. In this study, we examined how useful trehalose is as protectant for BV cryopreservation during repeated freeze-thaw cycles: 1) membrane fusion between liposomes (multilamellar vesicles, MLVs) and BVs, 2) infection of insect culture cells (Sf9 cells) by RFP-expressing BVs, and 3) morphologies of these BVs were investigated by fluorescent dequenching assay, fluorescence microscopy, and transmission electron microscopy (TEM), respectively. The results suggest that the BVs deteriorate in quality with each freeze-thaw cycle, and this deterioration can be diminished with the use of trehalose to an extent similar to that seen with storage on ice.
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Affiliation(s)
- Kohei Nakanishi
- Division of Chemistry for Materials, Graduate School of Engineering, Mie University, Tsu, Japan
| | - Masahiro Tomita
- Division of Chemistry for Materials, Graduate School of Engineering, Mie University, Tsu, Japan
| | - Kanta Tsumoto
- Division of Chemistry for Materials, Graduate School of Engineering, Mie University, Tsu, Japan
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25
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Cao Z, Liu S, Nan H, Zhao K, Xu X, Wang G, Ji H, Chen H. Immersion immunization with recombinant baculoviruses displaying cyprinid herpesvirus 2 membrane proteins induced protective immunity in gibel carp. FISH & SHELLFISH IMMUNOLOGY 2019; 93:879-887. [PMID: 31421239 DOI: 10.1016/j.fsi.2019.08.036] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Revised: 07/28/2019] [Accepted: 08/14/2019] [Indexed: 06/10/2023]
Abstract
Cyprinid herpesvirus 2 (CyHV-2) is the causative pathogen of herpesviral haematopoietic necrosis disease, which has caused huge economic losses to aquaculture industry in China. In this study, nine truncated CyHV-2 membrane glycoproteins (ORF25, ORF25C, ORF25D, ORF30, ORF124, ORF131, ORF136, ORF142A, ORF146) and a GFP reporter protein were respectively expressed using baculovirus surface displaying system. Western blot showed that the proteins were successfully packaged in the recombinant virus particles. In baculovirus transduced gibel carp kidney cells, the target proteins were expressed and displayed on the fish cell surface. Healthy gibel carp were immunized by immersion with the recombinant baculoviruses and the fish treated with phosphate-buffered saline (PBS) were served as mock group. The expression of interleukin-11 (IL-11), interferon α (IFNα) and a complement component gene C3 were significantly up-regulated in most experimental groups, and interferon γ (IFNγ) expression in some groups were also induced after immunization. Subsequently, the immunized gibel carp were challenged by intraperitoneal injection of CyHV-2 virus. All the immunized groups exhibited reduced mortality after CyHV-2 challenge. In the groups immunized with baculoviruses displaying and expressing ORF25, ORF25C and ORF146, the relative percentage survival values reached 83.3%, 87.5% and 70.8%, respectively. Our data suggested that baculovirus-displayed ORF25, ORF25C and ORF146 could be potential vaccine candidates for the prevention of CyHV-2 infection in gibel carp.
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Affiliation(s)
- Zhiwei Cao
- College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Sijia Liu
- College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Hao Nan
- College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Kaixia Zhao
- College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Xiaodong Xu
- College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Gaoxue Wang
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Hong Ji
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Hongying Chen
- College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, China.
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26
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Subbarayan S, Subramanian S, Senthil Kumar N. Recombinant Pierisin-5 Induces Apoptosis and Differential Expression of Bcl-2, Bax, and p53 in Human Cancer Cells. DNA Cell Biol 2019; 38:773-785. [DOI: 10.1089/dna.2018.4520] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Affiliation(s)
| | - Selvi Subramanian
- Department of Biotechnology, PSG College of Technology, Coimbatore, India
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Hodgson JJ, Buchon N, Blissard GW. Identification of insect genes involved in baculovirus AcMNPV entry into insect cells. Virology 2019; 527:1-11. [PMID: 30445201 DOI: 10.1016/j.virol.2018.10.022] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Revised: 10/19/2018] [Accepted: 10/21/2018] [Indexed: 01/01/2023]
Abstract
The baculovirus Autographa californica multiple nucleopolyhedrovirus (AcMNPV) is a model enveloped DNA virus that infects and replicates in lepidopteran insect cells, and can efficiently enter a wide variety of non-host cells. Budded virions of AcMNPV enter cells by endocytosis and traffic to the nucleus where the virus initiates gene expression and genome replication. While trafficking of nucleocapsids by actin propulsion has been studied in detail, other important components of trafficking during entry remain poorly understood. We used a recombinant AcMNPV virus expressing an EGFP reporter in combination with an RNAi screen in Drosophila DL1 cells, to identify host proteins involved in AcMNPV entry. The RNAi screen targeted 86 genes involved in vesicular trafficking, including genes coding for VPS and ESCRT proteins, Rab GTPases, Exocyst proteins, and Clathrin adaptor proteins. We identified 24 genes required for efficient virus entry and reporter expression, and 4 genes that appear to restrict virus entry.
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Affiliation(s)
- Jeffrey J Hodgson
- Boyce Thompson Institute at Cornell University, Tower Road, Ithaca, NY 14853, USA.
| | - Nicolas Buchon
- Department of Entomology, Cornell University, Ithaca, NY 14853, USA.
| | - Gary W Blissard
- Boyce Thompson Institute at Cornell University, Tower Road, Ithaca, NY 14853, USA.
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28
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Baculovirus as an efficient vector for gene delivery into mosquitoes. Sci Rep 2018; 8:17778. [PMID: 30542209 PMCID: PMC6290771 DOI: 10.1038/s41598-018-35463-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2017] [Accepted: 11/05/2018] [Indexed: 02/06/2023] Open
Abstract
Efficient gene delivery technologies play an essential role in the gene functional analyses that are necessary for basic and applied researches. Mosquitoes are ubiquitous insects, responsible for transmitting many deadly arboviruses causing millions of human deaths every year. The lack of efficient and flexible gene delivery strategies in mosquitoes are among the major hurdles for the study of mosquito biology and mosquito-pathogen interactions. We found that Autographa californica multiple nucleopolyhedrovirus (AcMNPV), the type baculovirus species, can efficiently transduce mosquito cells without viral propagation, allowing high level gene expression upon inducement by suitable promoters without obvious negative effects on cell propagation and viability. AcMNPV transduces into several mosquito cell types, efficiently than in commonly used mammalian cell lines and classical plasmid DNA transfection approaches. We demonstrated the application of this system by expressing influenza virus neuraminidase (NA) into mosquito hosts. Moreover, AcMNPV can transduce both larvae and adults of essentially all blood-sucking mosquito genera, resulting in bright fluorescence in insect bodies with little or no tissue barriers. Our experiments establish baculovirus as a convenient and powerful gene delivery vector in vitro and in vivo that will greatly benefit research into mosquito gene regulation, development and the study of mosquito-borne viruses.
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29
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Mansouri M, Berger P. Baculovirus for gene delivery to mammalian cells: Past, present and future. Plasmid 2018; 98:1-7. [PMID: 29842913 DOI: 10.1016/j.plasmid.2018.05.002] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 05/25/2018] [Accepted: 05/25/2018] [Indexed: 12/11/2022]
Abstract
Baculovirus is an insect virus which has been used for more than thirty years for production of recombinant proteins in insect cells. However, baculovirus can also be harnessed for efficient gene delivery to mammalian cells if it is equipped with mammalian promoters. This technology is known as BacMam and has been used for gene delivery to immortalized cell lines, stem cells, and primary cells, as well as for gene delivery in animals. Baculovirus has unique features when compared to mammalian viruses. Besides the fact that it is replication-incompetent and does not integrate into the host genome, it has large capacity for foreign DNA. This capacity can for example be used to deliver multiple genes for reprogramming of stem cells, or for delivery of large homology constructs for genome editing. In this review, we provide a brief overview of baculovirus-based gene delivery and its recent applications in therapy and basic research. We also describe how baculovirus is manipulated for efficient transduction in mammalian cells and we highlight possible future improvements.
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Affiliation(s)
- Maysam Mansouri
- Paul Scherrer Institute, Biomolecular Research, Applied Molecular Biology, CH-5232 Villigen, Switzerland; ETH Zürich, Department of Biosystems Science and Engineering, Mattenstrasse 26, CH-4058 Basel, Switzerland
| | - Philipp Berger
- Paul Scherrer Institute, Biomolecular Research, Applied Molecular Biology, CH-5232 Villigen, Switzerland.
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30
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Li W, Song X, Yu H, Zhang M, Li F, Cao C, Jiang Q. Dendritic cell-based cancer immunotherapy for pancreatic cancer. Arab J Gastroenterol 2018. [PMID: 29526540 DOI: 10.1016/j.ajg.2017.05.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Pancreatic cancer (PC) is a lethal disease and remains one of the most resistant cancers to traditional therapies. New therapeutic modalities are urgently needed, particularly immunotherapy, which has shown promise in numerous animal model studies. Dendritic cell (DC)-based immunotherapy has been used in clinical trials for various cancers, including PC, because DCs are the most potent antigen-presenting cell (APC), which are capable of priming naive T cells and stimulating memory T cells to generate antigen-specific responses. In this paper, we review the preclinical and clinical efforts towards the application of DCs for PC.
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Affiliation(s)
- Wei Li
- Laboratory of Nuclear and Radiation Damage, The General Hospital of The PLA Rocket Force, Beijing 100088, China
| | - Xiujun Song
- Laboratory of Nuclear and Radiation Damage, The General Hospital of The PLA Rocket Force, Beijing 100088, China
| | - Huijie Yu
- Laboratory of Nuclear and Radiation Damage, The General Hospital of The PLA Rocket Force, Beijing 100088, China
| | - Manze Zhang
- Laboratory of Nuclear and Radiation Damage, The General Hospital of The PLA Rocket Force, Beijing 100088, China
| | - Fengsheng Li
- Laboratory of Nuclear and Radiation Damage, The General Hospital of The PLA Rocket Force, Beijing 100088, China
| | - Cheng Cao
- Beijing Institute of Biotechnology, Beijing 100850, China.
| | - Qisheng Jiang
- Laboratory of Nuclear and Radiation Damage, The General Hospital of The PLA Rocket Force, Beijing 100088, China.
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31
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Penaud-Budloo M, François A, Clément N, Ayuso E. Pharmacology of Recombinant Adeno-associated Virus Production. MOLECULAR THERAPY-METHODS & CLINICAL DEVELOPMENT 2018; 8:166-180. [PMID: 29687035 PMCID: PMC5908265 DOI: 10.1016/j.omtm.2018.01.002] [Citation(s) in RCA: 117] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Recombinant adeno-associated viral (rAAV) vectors have been used in more than 150 clinical trials with a good safety profile and significant clinical benefit in many genetic diseases. In addition, due to their ability to infect non-dividing and dividing cells and to serve as efficient substrate for homologous recombination, rAAVs are being used as a tool for gene-editing approaches. However, manufacturing of these vectors at high quantities and fulfilling current good manufacturing practices (GMP) is still a challenge, and several technological platforms are competing for this niche. Herein, we will describe the most commonly used upstream methods to produce rAAVs, paying particular attention to the starting materials (input) used in each platform and which related impurities can be expected in final products (output). The most commonly found impurities in rAAV stocks include defective particles (i.e., AAV capsids that do contain the therapeutic gene or are not infectious), residual proteins from host cells and helper viruses (adenovirus, herpes simplex virus, or baculoviruses), and illegitimate DNA from plasmids, cells, or helper viruses that may be encapsidated into rAAV particles. Given the role that impurities may play in immunotoxicity, this article reviews the impurities inherently associated with each manufacturing platform.
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Affiliation(s)
- Magalie Penaud-Budloo
- INSERM UMR1089, University of Nantes, Centre Hospitalier Universitaire, Nantes, France
| | - Achille François
- INSERM UMR1089, University of Nantes, Centre Hospitalier Universitaire, Nantes, France
| | - Nathalie Clément
- Powell Gene Therapy, Department of Pediatrics, University of Florida, Gainesville, FL, USA
| | - Eduard Ayuso
- INSERM UMR1089, University of Nantes, Centre Hospitalier Universitaire, Nantes, France
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32
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Pseudotyped baculovirus is an effective gene expression tool for studying molecular function during axolotl limb regeneration. Dev Biol 2017; 433:262-275. [PMID: 29198566 DOI: 10.1016/j.ydbio.2017.10.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2017] [Revised: 10/08/2017] [Accepted: 10/11/2017] [Indexed: 12/31/2022]
Abstract
Axolotls can regenerate complex structures through recruitment and remodeling of cells within mature tissues. Accessing the underlying mechanisms at a molecular resolution is crucial to understand how injury triggers regeneration and how it proceeds. However, gene transformation in adult tissues can be challenging. Here we characterize the use of pseudotyped baculovirus (BV) as an effective gene transfer method both for cells within mature limb tissue and within the blastema. These cells remain competent to participate in regeneration after transduction. We further characterize the effectiveness of BV for gene overexpression studies by overexpressing Shh in the blastema, which yields a high penetrance of classic polydactyly phenotypes. Overall, our work establishes BV as a powerful tool to access gene function in axolotl limb regeneration.
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Abstract
Gene therapy based on viral vectors has demonstrated steady progress recently, not only in the area of cancers. A multitude of viral vectors has been engineered for both preventive and therapeutic applications. Two main approaches comprise of viral vector-based delivery of toxic or anticancer genes or immunization with anticancer antigens. Tumor growth inhibition and tumor regression have been observed, providing improved survival rates in animal tumor models. Furthermore, vaccine-based cancer immunotherapy has demonstrated both tumor regression and protection against challenges with lethal doses of tumor cells. Several clinical trials with viral vectors have also been conducted. Additionally, viral vector-based cancer drugs have been approved. This review gives an overview of different viral vector systems and their applications in cancer gene therapy.
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34
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Lee JY, Chang J. Recombinant baculovirus-based vaccine expressing M2 protein induces protective CD8 + T-cell immunity against respiratory syncytial virus infection. J Microbiol 2017; 55:900-908. [PMID: 29076066 DOI: 10.1007/s12275-017-7306-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Revised: 09/10/2017] [Accepted: 10/11/2017] [Indexed: 12/20/2022]
Abstract
Respiratory syncytial virus (RSV) is an important cause of acute lower respiratory tract disease in infants, young children, immunocompromised individuals, and the elderly. However, despite ongoing efforts to develop an RSV vaccine, there is still no authorized RSV vaccine for humans. Baculovirus has attracted attention as a vaccine vector because of its ability to induce a high level of humoral and cellular immunity, low cytotoxicity against various antigens, and biological safety for humans. In this study, we constructed a recombinant baculovirus- based vaccine expressing the M2 protein of RSV under the control of cytomegalovirus promoter (Bac_RSVM2) to induce CD8+ T-cell responses which play an important role in viral clearance, and investigated its protective efficacy against RSV infection. Immunization with Bac_RSVM2 via intranasal or intramuscular route effectively elicited the specific CD8+ T-cell responses. Most notably, immunization with Bac_RSVM2 vaccine almost completely protected mice from RSV challenge without vaccine-enhanced immunopathology. In conclusion, these results suggest that Bac_RSVM2 vaccine employing the baculovirus delivery platform has promising potential to be developed as a safe and novel RSV vaccine that provides protection against RSV infection.
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Affiliation(s)
- Jeong-Yoon Lee
- Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul, 03760, Republic of Korea
| | - Jun Chang
- Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul, 03760, Republic of Korea.
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35
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Sprick G, Weidner T, Salzig D, Czermak P. Baculovirus-induced recombinant protein expression in human mesenchymal stromal stem cells: A promoter study. N Biotechnol 2017; 39:161-166. [PMID: 28830745 DOI: 10.1016/j.nbt.2017.08.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Revised: 07/17/2017] [Accepted: 08/15/2017] [Indexed: 11/30/2022]
Abstract
Human mesenchymal stem cells (hMSCs) are the current workhorses of regenerative medicine and gene therapy. The corresponding vectors are usually based on lentiviruses, adenoviruses, retroviruses or adeno-associated viruses, but recently they have been joined by baculoviruses, which are more widely known for their role in the development of pesticides and vaccines. Here we show that gene transfer to an immortalized human mesenchymal stroma cell line can be achieved by baculovirus transduction. We also compared the performance of five different constitutive promoters controlling GFP expression. The human elongation factor 1α promoter (EF1α) achieved the strongest GFP expression, whereas the mouse phosphoglycerate kinase 1 promoter (PGK) was the weakest. The human EF1α promoter is therefore recommended for the regulation of genes introduced into hMSC-TERTs by baculovirus vectors.
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Affiliation(s)
- Gundula Sprick
- Institute of Bioprocess Engineering and Pharmaceutical Technology, University of Applied Sciences, Mittelhessen, Giessen, Germany
| | - Tobias Weidner
- Institute of Bioprocess Engineering and Pharmaceutical Technology, University of Applied Sciences, Mittelhessen, Giessen, Germany
| | - Denise Salzig
- Institute of Bioprocess Engineering and Pharmaceutical Technology, University of Applied Sciences, Mittelhessen, Giessen, Germany
| | - Peter Czermak
- Institute of Bioprocess Engineering and Pharmaceutical Technology, University of Applied Sciences, Mittelhessen, Giessen, Germany; Department of Chemical Engineering, Kansas State University, Manhattan, KS, USA; Faculty of Biology and Chemistry, Justus-Liebig-University of Giessen, Giessen, Germany; Fraunhofer Institute for Molecular Biology and Applied Ecology (IME), Project Group Bioresources, Giessen, Germany.
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36
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Hindriksen S, Bramer AJ, Truong MA, Vromans MJM, Post JB, Verlaan-Klink I, Snippert HJ, Lens SMA, Hadders MA. Baculoviral delivery of CRISPR/Cas9 facilitates efficient genome editing in human cells. PLoS One 2017. [PMID: 28640891 PMCID: PMC5480884 DOI: 10.1371/journal.pone.0179514] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
The CRISPR/Cas9 system is a highly effective tool for genome editing. Key to robust genome editing is the efficient delivery of the CRISPR/Cas9 machinery. Viral delivery systems are efficient vehicles for the transduction of foreign genes but commonly used viral vectors suffer from a limited capacity in the genetic information they can carry. Baculovirus however is capable of carrying large exogenous DNA fragments. Here we investigate the use of baculoviral vectors as a delivery vehicle for CRISPR/Cas9 based genome-editing tools. We demonstrate transduction of a panel of cell lines with Cas9 and an sgRNA sequence, which results in efficient knockout of all four targeted subunits of the chromosomal passenger complex (CPC). We further show that introduction of a homology directed repair template into the same CRISPR/Cas9 baculovirus facilitates introduction of specific point mutations and endogenous gene tags. Tagging of the CPC recruitment factor Haspin with the fluorescent reporter YFP allowed us to study its native localization as well as recruitment to the cohesin subunit Pds5B.
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Affiliation(s)
- Sanne Hindriksen
- Center for Molecular Medicine, Section Molecular Cancer Research, University Medical Center Utrecht, Universiteitsweg 100, CG, Utrecht, The Netherlands
| | - Arne J. Bramer
- Center for Molecular Medicine, Section Molecular Cancer Research, University Medical Center Utrecht, Universiteitsweg 100, CG, Utrecht, The Netherlands
| | - My Anh Truong
- Center for Molecular Medicine, Section Molecular Cancer Research, University Medical Center Utrecht, Universiteitsweg 100, CG, Utrecht, The Netherlands
| | - Martijn J. M. Vromans
- Center for Molecular Medicine, Section Molecular Cancer Research, University Medical Center Utrecht, Universiteitsweg 100, CG, Utrecht, The Netherlands
| | - Jasmin B. Post
- Center for Molecular Medicine, Section Molecular Cancer Research, University Medical Center Utrecht, Universiteitsweg 100, CG, Utrecht, The Netherlands
| | - Ingrid Verlaan-Klink
- Center for Molecular Medicine, Section Molecular Cancer Research, University Medical Center Utrecht, Universiteitsweg 100, CG, Utrecht, The Netherlands
| | - Hugo J. Snippert
- Center for Molecular Medicine, Section Molecular Cancer Research, University Medical Center Utrecht, Universiteitsweg 100, CG, Utrecht, The Netherlands
| | - Susanne M. A. Lens
- Center for Molecular Medicine, Section Molecular Cancer Research, University Medical Center Utrecht, Universiteitsweg 100, CG, Utrecht, The Netherlands
- * E-mail: (SMAL); (MAH)
| | - Michael A. Hadders
- Center for Molecular Medicine, Section Molecular Cancer Research, University Medical Center Utrecht, Universiteitsweg 100, CG, Utrecht, The Netherlands
- * E-mail: (SMAL); (MAH)
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Tavarone E, Molina GN, Amalfi S, Peralta A, Molinari P, Taboga O. The localization of a heterologous displayed antigen in the baculovirus-budded virion determines the type and strength of induced adaptive immune response. Appl Microbiol Biotechnol 2017; 101:4175-4184. [PMID: 28213733 DOI: 10.1007/s00253-017-8183-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Revised: 02/01/2017] [Accepted: 02/04/2017] [Indexed: 11/28/2022]
Abstract
In the search of strategies of presentation of heterologous antigens to elicit humoral or cellular immune responses that modulate and properly potentiate each type of response, researchers have been studying baculovirus (BV) as vaccine vectors with promising results. For some years, several research groups explored different antigen presentation approaches using the BV AcNPV by expressing polypeptides on the surface of budded virions or by de novo synthesis of heterologous antigens by transduction of mammalian cells. In the case of expression on the surface of budded virions, for example, researchers have expressed polypeptides in peplomers as GP64 glycoprotein fusions or distributed throughout the entire surface by fusions to portions of the G protein of vesicular stomatitis virus, VSV. Recently, our group developed the strategy of cross-presentation of antigens by fusions of GP64 to the capsid protein VP39 (capsid display) for the generation of cytotoxic responses. While the different strategies showed to be effective in raising immune responses, the individuality of each analysis makes difficult the comparison of the results. Here, by comparing the different strategies, we show that localization of the model antigen ovalbumin (OVA) strongly determined the quality and intensity of the adaptive response to the heterologous antigen. Furthermore, surface display favored humoral responses, whereas capsid display favored cytotoxic responses. Finally, capsid display showed a much more efficient strategy to activate CD8-mediated responses than transduction. The incorporation of adjuvants in baculovirus formulations dramatically diminished the immunostimulatory properties of baculovirus.
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Affiliation(s)
- Eugenia Tavarone
- Instituto de Biotecnología, Centro Nacional de Investigaciones Agropecuarias, INTA Castelar, Nicolás Repetto y De Los Reseros S/N° (B1686IGC), Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Guido Nicolás Molina
- Instituto de Biotecnología, Centro Nacional de Investigaciones Agropecuarias, INTA Castelar, Nicolás Repetto y De Los Reseros S/N° (B1686IGC), Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Sabrina Amalfi
- Instituto de Biotecnología, Centro Nacional de Investigaciones Agropecuarias, INTA Castelar, Nicolás Repetto y De Los Reseros S/N° (B1686IGC), Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Andrea Peralta
- Instituto de Biotecnología, Centro Nacional de Investigaciones Agropecuarias, INTA Castelar, Nicolás Repetto y De Los Reseros S/N° (B1686IGC), Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Paula Molinari
- Instituto de Biotecnología, Centro Nacional de Investigaciones Agropecuarias, INTA Castelar, Nicolás Repetto y De Los Reseros S/N° (B1686IGC), Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Oscar Taboga
- Instituto de Biotecnología, Centro Nacional de Investigaciones Agropecuarias, INTA Castelar, Nicolás Repetto y De Los Reseros S/N° (B1686IGC), Buenos Aires, Argentina.
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina.
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38
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Mazina O, Allikalt A, Tapanainen JS, Salumets A, Rinken A. Determination of biological activity of gonadotropins hCG and FSH by Förster resonance energy transfer based biosensors. Sci Rep 2017; 7:42219. [PMID: 28181555 PMCID: PMC5299843 DOI: 10.1038/srep42219] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Accepted: 01/06/2017] [Indexed: 12/29/2022] Open
Abstract
Determination of biological activity of gonadotropin hormones is essential in reproductive medicine and pharmaceutical manufacturing of the hormonal preparations. The aim of the study was to adopt a G-protein coupled receptor (GPCR)-mediated signal transduction pathway based assay for quantification of biological activity of gonadotropins. We focussed on studying human chorionic gonadotropin (hCG) and follicle-stimulating hormone (FSH), as these hormones are widely used in clinical practice. Receptor-specific changes in cellular cyclic adenosine monophosphate (cAMP, second messenger in GPCR signalling) were monitored by a Förster resonance energy transfer (FRET) biosensor protein TEpacVV in living cells upon activation of the relevant gonadotropin receptor. The BacMam gene delivery system was used for biosensor protein expression in target cells. In the developed assay only biologically active hormones initiated GPCR-mediated cellular signalling. High assay sensitivities were achieved for detection of hCG (limit of detection, LOD: 5 pM) and FSH (LOD: 100 pM). Even the small-scale conformational changes caused by thermal inactivation and reducing the biological activity of the hormones were registered. In conclusion, the proposed assay is suitable for quantification of biological activity of gonadotropins and is a good alternative to antibody- and animal-testing-based assays used in pharmaceutical industry and clinical research.
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Affiliation(s)
- Olga Mazina
- University of Tartu, Institute of Chemistry, Tartu, Estonia
- Competence Centre on Health Technologies, Tartu, Estonia
| | - Anni Allikalt
- University of Tartu, Institute of Chemistry, Tartu, Estonia
| | - Juha S. Tapanainen
- Department of Obstetrics and Gynecology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Andres Salumets
- Competence Centre on Health Technologies, Tartu, Estonia
- Department of Obstetrics and Gynecology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
- Department of Obstetrics and Gynaecology, University of Tartu, Tartu, Estonia
- Institute of Biomedicine and Translational Medicine, University of Tartu, Tartu, Estonia
| | - Ago Rinken
- University of Tartu, Institute of Chemistry, Tartu, Estonia
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39
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Zheng Y, Lewis TL, Igo P, Polleux F, Chatterjee A. Virus-Enabled Optimization and Delivery of the Genetic Machinery for Efficient Unnatural Amino Acid Mutagenesis in Mammalian Cells and Tissues. ACS Synth Biol 2017; 6:13-18. [PMID: 27482719 DOI: 10.1021/acssynbio.6b00092] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Unnatural amino acid (UAA) mutagenesis of recombinant proteins in live mammalian cells requires coexpression of the mutant target, as well as an engineered tRNA/aminoacyl-tRNA synthetase pair. The ability to readily determine the optimal relative expression levels of these three genetic components for efficient expression of the UAA-modified target is highly desirable, but remains challenging to accomplish. Here we report a facile strategy to achieve this by taking advantage of the efficient gene-delivery by a baculovirus vector, which enables systematic variation of the expression level of each genetic component in a population-wide manner. Insights gained from this study led to the design of an optimal expression system, which can be delivered into mammalian cells by a single baculovirus vector to provide significantly improved UAA incorporation efficiency at a low virus load. Furthermore, this optimized baculovirus vector was shown to enable efficient UAA mutagenesis of proteins expressed in mouse brain tissue.
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Affiliation(s)
- Yunan Zheng
- Department
of Chemistry, Boston College, 2609 Beacon Street, Chestnut Hill, Massachusetts 02467, United States
| | - Tommy L. Lewis
- Department
of Neuroscience, Columbia University, 550 West 120th Street, New York, New York 10027, United States
| | - Peter Igo
- Department
of Chemistry, Boston College, 2609 Beacon Street, Chestnut Hill, Massachusetts 02467, United States
| | - Franck Polleux
- Department
of Neuroscience, Columbia University, 550 West 120th Street, New York, New York 10027, United States
| | - Abhishek Chatterjee
- Department
of Chemistry, Boston College, 2609 Beacon Street, Chestnut Hill, Massachusetts 02467, United States
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40
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Levin E, Diekmann H, Fischer D. Highly efficient transduction of primary adult CNS and PNS neurons. Sci Rep 2016; 6:38928. [PMID: 27958330 PMCID: PMC5153636 DOI: 10.1038/srep38928] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Accepted: 11/15/2016] [Indexed: 12/19/2022] Open
Abstract
Delivery and expression of recombinant genes, a key methodology for many applications in biological research, remains a challenge especially for mature neurons. Here, we report easy, highly efficient and well tolerated transduction of adult peripheral and central neuronal populations of diverse species in culture using VSV-G pseudo-typed, recombinant baculovirus (BacMam). Transduction rates of up to 80% were reliably achieved at high multiplicity of infection without apparent neuro-cytopathic effects. Neurons could be transduced either shortly after plating or after several days in culture. Co-incubation with two different baculoviruses attained near complete co-localization of fluorescent protein expression, indicating multigene delivery. Finally, evidence for functional protein expression is provided by means of cre-mediated genetic recombination and neurite outgrowth assays. Recombinant protein was already detected within hours after transduction, thereby enabling functional readouts even in relatively short-lived neuronal cultures. Altogether, these results substantiate the usefulness of baculovirus-mediated transduction of mature neurons for future research in neuroscience.
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Affiliation(s)
- Evgeny Levin
- Division of Experimental Neurology, Medical Faculty, Heinrich-Heine-University, Merowingerplatz 1a, 40225 Düsseldorf, Germany
| | - Heike Diekmann
- Division of Experimental Neurology, Medical Faculty, Heinrich-Heine-University, Merowingerplatz 1a, 40225 Düsseldorf, Germany
| | - Dietmar Fischer
- Division of Experimental Neurology, Medical Faculty, Heinrich-Heine-University, Merowingerplatz 1a, 40225 Düsseldorf, Germany
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41
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Liu J, Shui SL. Delivery methods for site-specific nucleases: Achieving the full potential of therapeutic gene editing. J Control Release 2016; 244:83-97. [DOI: 10.1016/j.jconrel.2016.11.014] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2016] [Revised: 10/30/2016] [Accepted: 11/07/2016] [Indexed: 12/20/2022]
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42
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Alfonso V, Amalfi S, López MG, Taboga O. Effects of deletion of the ac109 gene of Autographa californica nucleopolyhedrovirus on interactions with mammalian cells. Arch Virol 2016; 162:835-840. [PMID: 27868165 DOI: 10.1007/s00705-016-3142-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Accepted: 10/31/2016] [Indexed: 12/01/2022]
Abstract
Baculoviruses are able to enter into mammalian cells, where they can express a transgene that is placed under an appropriate promoter, without producing infectious progeny. ORF109 encodes an essential baculovirus protein that participates in the interaction of the baculovirus with mammalian cells. To date, the mechanisms underlying this interaction are not yet known. We demonstrated that although a Ac109 knock out virus maintained its ability to enter into BHK-21 cells, there was a marked reduction in the expression efficiency of the nuclear transgene. Moreover, the amount of free cytoplasmic viral DNA, which was detected by transcription of a reporter gene, was severely diminished. These results suggest Ac109 could be involved in maintaining the integrity of the viral nucleic acid.
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Affiliation(s)
- Victoria Alfonso
- INTA, CONICET, Instituto de Biotecnología, CICVyA, Nicolás Repetto y de los Reseros S/N, Hurlingham, CP 1686, Buenos Aires, Argentina
| | - Sabrina Amalfi
- INTA, Instituto de Biotecnología, CICVyA, Nicolás Repetto y de los Reseros S/N, Hurlingham, CP 1686, Buenos Aires, Argentina
| | - María Gabriela López
- INTA, CONICET, Instituto de Biotecnología, CICVyA, Nicolás Repetto y de los Reseros S/N, Hurlingham, CP 1686, Buenos Aires, Argentina
| | - Oscar Taboga
- INTA, CONICET, Instituto de Biotecnología, CICVyA, Nicolás Repetto y de los Reseros S/N, Hurlingham, CP 1686, Buenos Aires, Argentina.
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43
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Puthumana J, Philip R, Bright Singh IS. Transgene expression in Penaeus monodon cells: evaluation of recombinant baculoviral vectors with shrimp specific hybrid promoters. Cytotechnology 2016; 68:1147-59. [PMID: 25982944 PMCID: PMC4960163 DOI: 10.1007/s10616-015-9872-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2014] [Accepted: 03/27/2015] [Indexed: 12/30/2022] Open
Abstract
It has been realized that shrimp cell immortalization may not be accomplished without in vitro transformation by expressing immortalizing gene in cells. In this process, efficiency of transgene expression is confined to the ability of vectors to transmit gene of interests to the genome. Over the years, unavailability of such vectors has been hampering application of such a strategy in shrimp cells. We report the use of recombinant baculovirus mediated transduction using hybrid promoter system for transgene expression in lymphoid cells of Penaeus monodon. Two recombinant baculovirus vectors with shrimp viral promoters (WSSV-Ie1 and IHHNV-P2) were constructed (BacIe1-GFP and BacP2-GFP) and green fluorescent protein (GFP) used as the transgene. The GFP expression in cells under the control of hybrid promoters, PH-Ie1 or PH-P2, were analyzed and confirmed in shrimp cells. The results indicate that the recombinant baculovirus with shrimp specific viral promoters (hybrid) can be employed for delivery of foreign genes to shrimp cells for in vitro transformation.
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Affiliation(s)
- Jayesh Puthumana
- National Centre for Aquatic Animal Health, Cochin University of Science and Technology, Fine Arts Avenue, Kochi, 682016, Kerala, India
| | - Rosamma Philip
- Department of Marine Biology, Microbiology and Biochemistry, Cochin University of Science and Technology, Fine Arts Avenue, Kochi, 682016, Kerala, India
| | - I S Bright Singh
- National Centre for Aquatic Animal Health, Cochin University of Science and Technology, Fine Arts Avenue, Kochi, 682016, Kerala, India.
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44
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Abstract
Antigenic drift of seasonal influenza viruses and the occasional introduction of influenza viruses of novel subtypes into the human population complicate the timely production of effective vaccines that antigenically match the virus strains that cause epidemic or pandemic outbreaks. The development of game-changing vaccines that induce broadly protective immunity against a wide variety of influenza viruses is an unmet need, in which recombinant viral vectors may provide. Use of viral vectors allows the delivery of any influenza virus antigen, or derivative thereof, to the immune system, resulting in the optimal induction of virus-specific B- and T-cell responses against this antigen of choice. This systematic review discusses results obtained with vectored influenza virus vaccines and advantages and disadvantages of the currently available viral vectors.
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Affiliation(s)
- Rory D de Vries
- a Department of Viroscience , Erasmus MC , Rotterdam , The Netherlands
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45
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Abstract
Viral vectors have frequently been applied in gene therapy with the final goal of treating various diseases in the areas of neurology, neurodegeneration, metabolic disease, and cancer. Vectors have been engineered based on AAV, adenoviruses, alphaviruses, herpes simplex viruses, lentiviruses, and retroviruses. Some vectors are suitable for short-term episomal transgene expression, whereas others are integrated into the host cell genome to provide long-term expression. Additionally, hybrid vectors with favorable features from different viruses have been developed. Therapeutic genes of choice have typically been toxic genes such as thymidine kinase, pro-apoptotic genes like Bax, and immunostimulatory genes (for instance, interleukin-12). A large number of animal studies have demonstrated proof of concept of viral gene therapy. Many types of viral vectors have been employed in more than 700 clinical trials that have been carried out or are currently in progress.
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Affiliation(s)
- Kenneth Lundstrom
- Regulon Inc., Chemin des Croisettes 22, CH-1066 Epalinges, Switzerland.
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46
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FGF8 and SHH substitute for anterior–posterior tissue interactions to induce limb regeneration. Nature 2016; 533:407-10. [DOI: 10.1038/nature17972] [Citation(s) in RCA: 106] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2014] [Accepted: 04/05/2016] [Indexed: 01/06/2023]
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47
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Hattori T, Nakanishi K, Mori T, Tomita M, Tsumoto K. The method used to culture host cells (Sf9 cells) can affect the qualities of baculovirus budding particles expressing recombinant proteins. Biosci Biotechnol Biochem 2016; 80:445-51. [DOI: 10.1080/09168451.2015.1101331] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Abstract
Budded virus (BV) particles of baculovirus (Autographa californica nucleopolyhedrovirus, AcNPV) are harvested from the supernatant of liquid culture of Sf9 host cells by ultracentrifugation. Using polyacrylamide gel electrophoresis, Western blot and transmission electron microscopy (TEM) of BV samples fractionated closely by sucrose density gradient centrifugation, we observed that BVs exhibited different qualities depending on whether they had been harvested from the supernatant from a standing (static), shaking (suspension), or standing/shaking (pre-/post-infection) culture of Sf9 cells. The amount of BV protein apparently increased in the order of standing, standing/shaking, and shaking procedure, and the yield of intact particles showed an opposite trend. TEM observation clearly showed that appropriate fractions of the standing and standing/shaking cultures contained more intact BV particles than those from the shaking culture. These results suggest that the qualities of recombinant BV particles may be related to the culture conditions of the host cells.
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Affiliation(s)
- Tomomi Hattori
- Division of Chemistry for Materials, Graduate School of Engineering, Mie University, Tsu, Japan
| | - Kohei Nakanishi
- Division of Chemistry for Materials, Graduate School of Engineering, Mie University, Tsu, Japan
| | - Takaaki Mori
- Division of Chemistry for Materials, Graduate School of Engineering, Mie University, Tsu, Japan
| | - Masahiro Tomita
- Division of Chemistry for Materials, Graduate School of Engineering, Mie University, Tsu, Japan
| | - Kanta Tsumoto
- Division of Chemistry for Materials, Graduate School of Engineering, Mie University, Tsu, Japan
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48
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Keil GM, Pollin R, Müller C, Giesow K, Schirrmeier H. BacMam Platform for Vaccine Antigen Delivery. Methods Mol Biol 2016; 1349:105-119. [PMID: 26458832 DOI: 10.1007/978-1-4939-3008-1_7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Recombinant baculo viruses based on Autographa californica multiple nuclear polyhedrosis virus carrying vertebrate cell active expression cassettes, so-called BacMam viruses, are increasingly used as gene delivery vectors for vaccination of animals against pathogens. Different approaches for generation of BacMams exist and a variety of transfer vectors to improve target protein expression in vivo have been constructed. Here we describe a use of transfer vector which contains an insect cell-restricted expression cassette for the green fluorescent protein and thus enables easy monitoring of BacMam virus rescue, fast plaque purification of recombinants and their convenient titer determination and which has been proven to be efficacious for gene delivery in vaccination/challenge experiments.
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Affiliation(s)
- Günther M Keil
- Institut für molekulare Virologie und Zellbiologie, Friedrich-Loeffler-Instiut, Südufer 10, Greifswald, 17493, Insel Riems, Germany.
- Institut für Virusdiagnostik, Friedrich-Loeffler-Instiut, Südufer 10, Greifswald, 17493, Insel Riems, Germany.
| | - Reiko Pollin
- Institut für molekulare Virologie und Zellbiologie, Friedrich-Loeffler-Instiut, Südufer 10, Greifswald, 17493, Insel Riems, Germany
- Institut für Virusdiagnostik, Friedrich-Loeffler-Instiut, Südufer 10, Greifswald, 17493, Insel Riems, Germany
| | - Claudia Müller
- Institut für molekulare Virologie und Zellbiologie, Friedrich-Loeffler-Instiut, Südufer 10, Greifswald, 17493, Insel Riems, Germany
- Institut für Virusdiagnostik, Friedrich-Loeffler-Instiut, Südufer 10, Greifswald, 17493, Insel Riems, Germany
| | - Katrin Giesow
- Institut für molekulare Virologie und Zellbiologie, Friedrich-Loeffler-Instiut, Südufer 10, Greifswald, 17493, Insel Riems, Germany
- Institut für Virusdiagnostik, Friedrich-Loeffler-Instiut, Südufer 10, Greifswald, 17493, Insel Riems, Germany
| | - Horst Schirrmeier
- Institut für molekulare Virologie und Zellbiologie, Friedrich-Loeffler-Instiut, Südufer 10, Greifswald, 17493, Insel Riems, Germany
- Institut für Virusdiagnostik, Friedrich-Loeffler-Instiut, Südufer 10, Greifswald, 17493, Insel Riems, Germany
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49
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Abstract
BacMams are modified baculoviruses that contain mammalian expression cassettes for gene delivery and expression in mammalian cells. BacMams have become an integral part of the recombinant mammalian gene expression toolbox in research labs worldwide. Construction of transfer vectors is straightforward using basic molecular biology protocols. Virus generation is based on common methods used with the baculovirus insect cell expression system. BacMam transduction of mammalian cells requires minimal modifications to familiar cell culture methods. This chapter highlights the BacMam transfer vector pHTBV.
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50
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Mazina O, Allikalt A, Heinloo A, Reinart-Okugbeni R, Kopanchuk S, Rinken A. cAMP assay for GPCR ligand characterization: application of BacMam expression system. Methods Mol Biol 2015; 1272:65-77. [PMID: 25563177 DOI: 10.1007/978-1-4939-2336-6_5] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Cyclic adenosine monophosphate (cAMP) is a second messenger of many G-protein-coupled receptors. The change in cellular cAMP level has widely been used to estimate the biological activity of various GPCR-specific agents. Förster resonance energy transfer (FRET) biosensors have been around for almost 10 years and became increasingly popular for cAMP detection. Ratiometric sensitized emission assay of a FRET biosensor can easily be implemented on fluorescence plate reader platforms. For such assays a considerable amount of cells expressing the desired biosensor is needed. A method to achieve sufficient and reproducible level of cAMP biosensor protein expression with the means of BacMam transduction system is the subject of this chapter.
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Affiliation(s)
- Olga Mazina
- Institute of Chemistry, University of Tartu, Ravila 14a, Tartu, 50411, Estonia
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